A collection of metro fiber maps for the Maryland, Delaware, and Washington DC metro area, including the major hubs in northern Virginia. Other Virginia metro areas will be found on the Virginia and the Carolinas page, a geographical division that seems to make more sense than the alternative.
|AiNET||Downtown Washington DC||both|
|Crown Castle||DC Metro, Baltimore, Delaware||both|
|Fiberlight||Culpeper VA, DC Metro, Germantown, Baltimore||both|
|Windstream||DC Metro, Baltimore, Wilmington||both|
|Level 3||DC Metro, Baltimore Metro, Frederick||both||Google Maps, zoom in|
|Lumos Networks||Frederick, Hagerstown||lit|
|Lightower||DC Metro||both||Zoom In|
|Sunesys||Baltimore, Wilmington||dark||KML with registration|
|Zayo||DC Metro, Baltimore, Baltimore County||both||Google Maps, zoom in|
|Still seeking maps for the following known providers:|
|Cogent||DC Metro, Baltimore||lit||on-net buildings tool|
|XO||DC Metro, Baltimore||both|
Where possible, all links are to material offered on the websites of the company operating the fiber. I prefer such links, but will sometimes host the files myself where the operator agrees, and in rare cases may point to third party sources. Where available, links to on-net building lists are also given.
Additional maps of metro fiber networks that ought to be on this list are very welcome, as are corrections to the above links. Please just leave a comment below or send an email to email@example.com.